Monera Audio SAQs .docx

Kingdom Monera Audio SAQs - Define prokaryotic  1. An organism with no nucleus or membrane enclosed organelles.  - Name the three bacterial shapes  1. Round/spherical, rod and spiral.  - What is the function of the flagella?  1. Allows for movement  - Name the method used by bacte...

Kingdom Monera Audio SAQs - Define prokaryotic  1. An organism with no nucleus or membrane enclosed organelles.  - Name the three bacterial shapes  1. Round/spherical, rod and spiral.  - What is the function of the flagella?  1. Allows for movement  - Name the method used by bacteria to reproduce  1. Binary fission  - What are saprophytic bacteria?  1. Bacteria that feeds on dead organic matter  - What is photosynthetic bacteria? 1. Photosynthetic bacteria use energy from the sun to make their food - What is Chemosynthetic bacteria? A. Chemosynthetic bacteria use energy from chemical reactions to make their food. - Why do some bacteria form endospores?  1. To survive unfavourable conditions  - Name 2 factors that affect the growth of bacteria  1. Temperature/ pH/ oxygen concentration/ external solute concentration/ pressure  - What are anaerobic bacteria?  1. Bacteria that do not require oxygen  - What are obligate anaerobes?.  1. Obligate anaerobes can respire with or without oxygen. - What are facultative anaerobes? A. Facultative anaerobes can only respire in the absence of oxygen - State 2 advantages of bacteria  1. Bacteria in our gut help to make vitamin K/ Lactobacillus bacteria are used to make yoghurt and cheese/ bacteria are active in the carbon and nitrogen cycle/ antibiotics are formed by some bacteria  - State 2 disadvantages of bacteria  1. Bacteria cause illness in animals/ bacteria cause disease in plants/ bacteria cause food spoilage/ bacteria cause tooth decay - Name the stages of the growth curve  1. Lag phase, log phase, stationary phase, decline phase  - How do some bacteria withstand unfavourable conditions?  1. By forming endospores  - What does the term aseptic mean?  1. something that is free from pathogens  - What does the term sterile mean?  1. means that something is free from microorganisms  - How do you properly dispose of agar plates?  1. soak the plates in disinfectant or use an autoclave (pressure cooker) to ensure no risk of exposure to pathogens before disposing of the plates.